Dream About School Institute Brigadier Practical Exam Escalator Explore People

I saw a recurring dream tonight. I saw a school or an institute that we were in. We were there for our viva and practicals and we were made to wait for a special guest who was a brigadier. While waiting for him, i was with all new people and they were my friends. Till they start our practical exam and viva, we had lot of time left . So we decided to explore the place. While moving inside, one other person who probably was the mother of 2 of my friends started walking along. We used stairs to go inside. And when we reached inside the institute, it resombled a mall with zero shops. It had very long escalators and a new type of escalator which did not have stairs, but was made of rotating metal rods on which it is hard for anyone to reach the top while standing. And it was more than simple to reach the top while lying down in sleeping position. During this exploration, I was with my best friends whom I miss very much and when we came out of the building I met the people who weren't a good memory to me but were my friends. This dream was in two parts : 1st half once before and 1st half along with 2nd half tonight